Original Drama ~Mahiru & Kuro ver.~

Original Drama ~Mahiru & Kuro ver.~ (オリジナルドラマ!真昼&クロver.~ Orijinaru Dorama ~Mahiru & Kuro ver.~) is the fourth track of CHARACTER CD MAHIRU & KURO. Unlike the other tracks on the CD this track is an original drama story rather than a song. The story features only Mahiru Shirota and Kuro. The story was released on June 24, 2015.

Plot
The story begins with Mahiru & Kuro reading scripts at a record company. Kuro's script says that his catchphrase is "can't deal~" and that he's a soothing vampire that turns into a slothful but cute cat. Mahiru's script on the other hand describes him as a pure-hearted and positive sun-like idol and a high school housewife. Mahiru takes offence at his script and throws it down, Kuro argues and says that if they're making their idol debut they need catchphrases that suit their characters. Mahiru argues back saying they're not even idols, Kuro complains that Mahiru's catchphrase lacks idol charm and that he should go by "Mahimahi" instead. Mahiru vehemently rejects this idea.

Kuro begins writing a new script for Mahiru that he thinks is more charming for an idol, but after saying it out loud Mahiru rejects that script too due to it saying he fights "yandere vampires with the power of a smile". Kuro points out that friendliness is one of Mahiru's biggest selling points and that plain and homely idols can be successful too. He goes on to say that he thinks Mahiru would use a ladle rather than a mic, his costume would be his apron and he would twirl a frying pan. This housewife talk just pisses Mahiru off more which predictably exasperates Kuro. Mahiru retaliates by giving Kuro the nickname "Kuu-chan", but then points out he already has a 'street' name, "Sleepy Ash- the strongest Servamp." Kuro then points out he prefers to go for a cuter image and promptly transforms into his cat form saying that everyone should be soothed by a cute little NEET kitty vampire like him (NEET standing for a youth not in education, employment or training). Mahiru reprimands him saying he should decide whether he's a cat or a vampire, but Kuro says his charm point is that he's both.

After nearly releasing some spoilers about Kuro the duo then move onto the fact that two need an idol unit name. Mahiru's simple idea is that they should just stick to "Mahiru & Kuro", but Kuro says since he's a black cat and Mahiru has a broom they should go by "Kiki's Deli**** Service" (the name was bleeped out). The two then propose based on their nickname's (Kuu-chan & Mahimahi) maybe they should be called "Sun Meow Meow☆!" and pose. They say it sounds a bit childish and Mahiru says that the cat pose, ears and tail don't really suit him, and that he's not suited to be an idol. Kuro then suggests what if they cross his "Nya" with "Servamp" for "Nyavamp!" and proceeds to show off how an audience would react to it. The two proceed to introduce themselves as the sunny and soothing Mahimahi & Kuu-chan of Nyaaaaavamp☆! (complete with poses).

Mahiru then declares its time for them to stop and that they need to go shopping on the way home, Kuro says he's exhausted and that he wants potato chips as a reward for all his work. Mahiru agrees on the condition that he cleans the bathtub, Kuro declares it a pain but agrees. The story ends as Mahiru muses what he should cook for dinner while Kuro calls him a housewife.